Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 15/8 from 18/7

1st number: 2 4/7, 2nd number: 1 7/8

18/7 - 15/8 is 39/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 8 is 56
  2. For the 1st fraction, since 7 × 8 = 56,
    18/7 = 18 × 8/7 × 8 = 144/56
  3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
    15/8 = 15 × 7/8 × 7 = 105/56
  4. Subtract the two fractions:
    144/56 - 105/56 = 144 - 105/56 = 39/56

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

© everydaycalculation.com